Bump the dev-dependencies group across 1 directory with 2 updates

Bumps the dev-dependencies group with 2 updates in the / directory: [@rollup/plugin-commonjs](https://github.com/rollup/plugins/tree/HEAD/packages/commonjs) and [flow-bin](https://github.com/flowtype/flow-bin).


Updates `@rollup/plugin-commonjs` from 26.0.1 to 28.0.0
- [Changelog](https://github.com/rollup/plugins/blob/master/packages/commonjs/CHANGELOG.md)
- [Commits](https://github.com/rollup/plugins/commits/commonjs-v28.0.0/packages/commonjs)

Updates `flow-bin` from 0.246.0 to 0.247.0
- [Release notes](https://github.com/flowtype/flow-bin/releases)
- [Commits](https://github.com/flowtype/flow-bin/commits)

---
updated-dependencies:
- dependency-name: "@rollup/plugin-commonjs"
  dependency-type: direct:development
  update-type: version-update:semver-major
  dependency-group: dev-dependencies
- dependency-name: flow-bin
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: dev-dependencies
...

Signed-off-by: dependabot[bot] <[email protected]>